Today on our 2014 GMC Siera, we'll be installing the Blueox Diamond Hitch, under bed gooseneck for 30-thousand pounds, part number Dh1314. We'll go ahead and point out the operation of the ball. To insert the ball into the rise position, you'll line up the tab, put the slot on the ball. You'll then work the ball around, until it goes in and locks into place. To remove the ball, you'll push the tab… see more >